// pc
html{
    font-size: 50px;
}

// 此次定义的划分的份数为15
// 320
@no:15;
@media screen and (min-width:320px){
    html{
        font-size:320px / @no ;
    }
}

// 360
@media screen and (min-width:360px){
    html{
        font-size: 360px / @no
    }
}

// 375 iphone 678
@media screen and (min-width:375px){
    html{
        font-size: 375px / @no;
    }
}

//384
@media screen and (min-width:384px){
    html{
        font-size: 384px / @no;
    }
}

// 400 
@media screen and (min-width:400px){
    html{
        font-size: 400px / @no;
    }
}

// 414
@media screen and (min-width:414px){
    html{
        font-size: 414px / @no;
    }
}

//424
@media screen and (min-width:424px){
    html{
        font-size: 424px / @no;
    }
}

// 480
@media screen and (min-width:480px){
    html{
        font-size: 480px / @no;
    }
}

//540
@media screen and (min-width:540px){
    html{
        font-size: 540px / @no;
    }
}

// 720
@media screen and (min-width:720px){
    html{
        font-size: 720px / @no;
    }
}

// 750
@media screen and (min-width:750px){
    html{
        font-size: 750px / @no;
    }
}